Instruction manual

Page 1131 of 3156
Features and Services
CLASS: Visual Message Waiting
Indicator
Contents
The following are the topics in this section:
Feature description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1131
Operating parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1136
Feature interactions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1137
Feature packaging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1138
Feature implementation . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1139
Task summary list . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1139
Feature maintenance and diagnostics . .. . . . . . . . . . . . . . . . . . . . . . 1140
Feature operation . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1140
Feature description
The Custom Local Area Signaling Service (CLASS) Visual Message Waiting
Indicator (VMWI) feature allows a CLASS set to receive a visual indication
that messages are waiting. The visual indicator may be in the form of a
lighting or flashing Light Emitting Diode (LED), or a special message on a
liquid crystal display, or both. The type of visual indicator depends on the
firmware of the CLASS set being used.
Note: For a non-Class set, lighting the Message Waiting Lamp through
a high voltage message (Voltage Message Waiting) is still supported and
operates in the same way as it did before.